ImageUtils.java 文件源码

/**
 * 按质量压缩
 *
 * @param src         源图片
 * @param maxByteSize 允许最大值字节数
 * @param recycle     是否回收
 * @return 质量压缩压缩过的图片
 */
public static Bitmap compressByQuality(Bitmap src, long maxByteSize, boolean recycle) {
    if (isEmptyBitmap(src) || maxByteSize <= 0) return null;
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    int quality = 100;
    src.compress(CompressFormat.JPEG, quality, baos);
    while (baos.toByteArray().length > maxByteSize && quality > 0) {
        baos.reset();
        src.compress(CompressFormat.JPEG, quality -= 5, baos);
    }
    if (quality < 0) return null;
    byte[] bytes = baos.toByteArray();
    if (recycle && !src.isRecycled()) src.recycle();
    return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
}